| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ATRC | Director | May 05, 2017 | Option Exercise | $9.50 | 10,000 | 95,000 | 67,049 | May 09, 2017, 04:51 PM |
| ATRC | Director | May 05, 2017 | Sale | $22.08 | 10,000 | 220,800 | 57,049 | May 09, 2017, 04:51 PM |
| ATRC | Director | Mar 13, 2012 | Sale | $10.02 | 3,500 | 35,070 | 67,049 | Feb 23, 2017, 04:52 PM |
| ATRC | Director | Mar 30, 2015 | Sale | $21.01 | 42,500 | 892,925 | 262,845 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Mar 30, 2015 | Sale | $21.01 | 42,500 | 892,925 | 262,845 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Apr 01, 2015 | Sale | $20.50 | 18,634 | 381,997 | 234,211 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Apr 01, 2015 | Sale | $20.50 | 18,634 | 381,997 | 234,211 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Mar 31, 2015 | Sale | $20.51 | 10,000 | 205,100 | 252,845 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Mar 31, 2015 | Sale | $20.51 | 10,000 | 205,100 | 252,845 | Apr 01, 2015, 09:33 PM |
| ATRC | Director | Dec 31, 2014 | Sale | $20.00 | 28,866 | 577,320 | 305,345 | Jan 02, 2015, 04:18 PM |
| ATRC | Director | Dec 31, 2014 | Sale | $20.00 | 28,866 | 577,320 | 305,345 | Jan 02, 2015, 04:18 PM |
| ATRC | Director | Sep 14, 2012 | Buy | $7.69 | 1,045 | 8,034 | 70,549 | Sep 17, 2012, 11:41 AM |
| ATRC | Director | Sep 13, 2012 | Buy | $7.37 | 1,110 | 8,176 | 69,504 | Sep 14, 2012, 01:57 PM |
| ATRC | Director | Sep 12, 2012 | Buy | $7.09 | 1,150 | 8,159 | 68,394 | Sep 13, 2012, 11:12 AM |
| ATRC | Director | Sep 11, 2012 | Buy | $7.18 | 1,145 | 8,223 | 67,244 | Sep 12, 2012, 12:00 PM |
| ATRC | Director | Sep 10, 2012 | Buy | $7.15 | 1,215 | 8,683 | 754,063 | Sep 11, 2012, 04:32 PM |
| ATRC | Director | Sep 07, 2012 | Buy | $6.88 | 1,215 | 8,359 | 752,848 | Sep 07, 2012, 04:49 PM |
| ATRC | Director | Jun 13, 2011 | Sale | $14.00 | 30,000 | 420,000 | 63,669 | Jun 14, 2011, 04:49 PM |
| ATRC | Director | Nov 10, 2010 | Sale | $8.10 | 8,157 | 66,055 | 0 | Nov 12, 2010, 01:11 PM |
| ATRC | Director | Nov 10, 2010 | Sale | $8.10 | 8,479 | 68,663 | 93,669 | Nov 12, 2010, 01:11 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ATRC | Director | May 05, 2017 | Option Exercise | 95,000 |
| ATRC | Director | May 05, 2017 | Sale | 220,800 |
| ATRC | Director | Mar 13, 2012 | Sale | 35,070 |
| ATRC | Director | Mar 30, 2015 | Sale | 892,925 |
| ATRC | Director | Mar 30, 2015 | Sale | 892,925 |
| ATRC | Director | Apr 01, 2015 | Sale | 381,997 |
| ATRC | Director | Apr 01, 2015 | Sale | 381,997 |
| ATRC | Director | Mar 31, 2015 | Sale | 205,100 |
| ATRC | Director | Mar 31, 2015 | Sale | 205,100 |
| ATRC | Director | Dec 31, 2014 | Sale | 577,320 |
| ATRC | Director | Dec 31, 2014 | Sale | 577,320 |
| ATRC | Director | Sep 14, 2012 | Buy | 8,034 |
| ATRC | Director | Sep 13, 2012 | Buy | 8,176 |
| ATRC | Director | Sep 12, 2012 | Buy | 8,159 |
| ATRC | Director | Sep 11, 2012 | Buy | 8,223 |
| ATRC | Director | Sep 10, 2012 | Buy | 8,683 |
| ATRC | Director | Sep 07, 2012 | Buy | 8,359 |
| ATRC | Director | Jun 13, 2011 | Sale | 420,000 |
| ATRC | Director | Nov 10, 2010 | Sale | 66,055 |
| ATRC | Director | Nov 10, 2010 | Sale | 68,663 |